Goodwill and Other Intangible Assets (Details 2) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Components of amortized intangible assets
Gross Carrying Amount	$ 306.8		$ 306.6
Accumulated Amortization	(189.4)		(185.2)
Amortization expense for intangible assets	4.1	$ 4.2
Estimated amortization expense
Remainder of fiscal year	12.3
2019	15.7
2020	13.9
2021	12.3
2022	11.7
2023	9.8
Contract based
Components of amortized intangible assets
Gross Carrying Amount	9.4		9.1
Accumulated Amortization	(1.7)		(1.5)
Technology based
Components of amortized intangible assets
Gross Carrying Amount	79.4		79.3
Accumulated Amortization	(62.0)		(60.9)
Marketing related
Components of amortized intangible assets
Gross Carrying Amount	12.9		12.9
Accumulated Amortization	(9.2)		(9.1)
Customer based
Components of amortized intangible assets
Gross Carrying Amount	205.1		205.3
Accumulated Amortization	$ (116.5)		$ (113.7)

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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